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  • Title: Benign metastasizing leiomyoma of the lung with malignant transformation mimicking mediastinal tumor.
    Author: Ogawa M, Hara M, Ozawa Y, Moriyama S, Yano M, Shimizu S, Shibamoto Y.
    Journal: Clin Imaging; 2011; 35(5):401-4. PubMed ID: 21872133.
    Abstract:
    We report a rare case of benign metastasizing leiomyomas (BMLs) showing malignant transformation in one of them. A 65-year-old woman had a fever. Computed tomography (CT) revealed a mass on the left side of the anterior mediastinum and multiple nodules in bilateral lungs. The masses proved to be leiomyomas and a leiomyosarcoma. The latter showed heterogeneous contrast enhancement on CT and high heterogeneous uptake of (18)F-fluorodeoxyglucose (FDG) on positron emission tomography (PET)-CT. This case suggested the potential usefulness of PET-CT for differentiating these entities.
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